How much compression does a Ford Focus have?

How much compression does a Ford Focus have?

To make better sense of the above calculation, let’s say that my 2.0L Ford Focus produced the following compression test results: Cylinder #1 175 PSI. Cylinder #2 165 PSI. Cylinder #3 160 PSI. Cylinder #4 120 PSI.

How to test engine compression in a 2.0l Ford?

Have your helper crank the engine till the needle on the compression gauge stops climbing. Now, record on paper the value at which the needle stopped and the number of the engine cylinder on a piece of paper. Release the pressure on the gauge and repeat this step one more time. Repeat this test step on the remaining 3 cylinders.

Which is the lowest compression reading in an engine?

So, let’s say that cylinder #4 gave you the highest reading of 170 PSI. Well 170 X 0.15 gives you 26 (25.5 rounded off). Now, the next step is to subtract 26 from 170 -which gives us 144 PSI. So then, 144 PSI is the lowest possible compression reading that any one of the rest of the engine cylinders can have.

What are the symptoms of low cylinder compression?

Here are some other specific symptoms you may see with low cylinder compression: Engine cranks but does not start (0 compression in all cylinders). Blue smoke coming out of the tailpipe. Rough idle (engine misfires). Bad gas mileage. Engine ‘misses’ at idle but ‘miss’ disappears as you accelerate.

What’s the compression reading on a Ford Focus?

Any compression reading below this and that engine cylinder will misfire. To make better sense of the above calculation, let’s say that my 2.0L Ford Focus produced the following compression test results: Cylinder #1 175 PSI. Cylinder #2 165 PSI. Cylinder #3 160 PSI. Cylinder #4 120 PSI. The next step is to do the math: 175 x 0.15= 26, 175-26= 149.

Have your helper crank the engine till the needle on the compression gauge stops climbing. Now, record on paper the value at which the needle stopped and the number of the engine cylinder on a piece of paper. Release the pressure on the gauge and repeat this step one more time. Repeat this test step on the remaining 3 cylinders.

So, let’s say that cylinder #4 gave you the highest reading of 170 PSI. Well 170 X 0.15 gives you 26 (25.5 rounded off). Now, the next step is to subtract 26 from 170 -which gives us 144 PSI. So then, 144 PSI is the lowest possible compression reading that any one of the rest of the engine cylinders can have.

Here are some other specific symptoms you may see with low cylinder compression: Engine cranks but does not start (0 compression in all cylinders). Blue smoke coming out of the tailpipe. Rough idle (engine misfires). Bad gas mileage. Engine ‘misses’ at idle but ‘miss’ disappears as you accelerate.